KYB KG5551 Shock Absorber - Rear

Overview of KYB Gas-a-just Suspension Shock Absorber KG5551

The KYB Gas-a-just shock absorber KG5551 is engineered for reliable suspension performance on select Ford and Mercury vehicles. Designed to restore original handling and ride quality, this shock absorber is compatible with models such as the Ford Mustang, Capri, Fairmont, and Mercury Zephyr.

• Compressed length: 12.6 inches
• Extended length: 20.67 inches
• Stroke length: 8.07 inches
• Lower mount type: E2 (12.8x38)
• Upper mount type: S1
• Includes dust cover for protection
• No internal rebound spring, B-stop, or R-stop

Detailed Product Description

The KYB Gas-a-just KG5551 shock absorber is a gas-charged suspension component designed to provide consistent damping performance. Its compressed length of 12.6 inches and extended length of 20.67 inches offer an 8.07-inch stroke, suitable for the suspension travel requirements of the Ford Mustang, Capri, Fairmont, and Mercury Zephyr. The shock features an E2 lower mount (measuring 12.8x38) and an S1 upper mount, ensuring proper fitment and secure installation. A dust cover is included to protect the piston rod from dirt and debris, extending the service life of the shock absorber. This model does not include an internal rebound spring or bump stops (B-stop or R-stop), which is typical for this type of gas-charged shock.

About the Gas-a-just Product Line

KYB's Gas-a-just line focuses on gas-charged shock absorbers that deliver consistent damping and improved ride control. These shocks are designed to replace worn or damaged original equipment shocks, restoring vehicle stability and handling characteristics. The Gas-a-just KG5551 is part of this line, offering a balance of performance and durability for Ford and Mercury vehicles requiring precise suspension tuning.

Common Applications and Problem Solving

• Restores original ride comfort and handling on Ford Mustang, Capri, Fairmont, and Mercury Zephyr
• Reduces excessive bouncing and body roll during cornering
• Improves vehicle stability on uneven or rough roads
• Eliminates noise and vibration caused by worn shocks
• Prevents premature tire wear due to poor suspension damping

Installation Notes and Tips

When installing the KYB Gas-a-just KG5551 shock absorber, ensure the correct orientation of the E2 lower mount and S1 upper mount for proper fitment. Verify that the dust cover is intact and properly positioned to protect the piston rod. It is recommended to replace shocks in pairs (both front or both rear) to maintain balanced suspension performance. Use appropriate tools and follow vehicle-specific service manuals for torque specifications and safety precautions.

Quality Assurance and Warranty

KYB manufactures the Gas-a-just KG5551 shock absorber to meet or exceed OEM standards for durability and performance. The product includes a dust cover to enhance longevity and is backed by KYB's quality control processes. Warranty coverage details should be confirmed with the retailer or KYB directly, as terms may vary by region.